diff options
| author | Matias Elo <matias.elo@nokia.com> | 2018-11-09 12:17:28 +0200 |
|---|---|---|
| committer | Maxim Uvarov <maxim.uvarov@linaro.org> | 2018-11-14 10:54:31 +0300 |
| commit | 901de0794779a6f419f5229de045bf610ec2adc2 (patch) | |
| tree | 271f70b12a30f296f7f7cb8e5d217079d1d7af72 /platform | |
| parent | 33c034c005f686cda95bc21ca4ed1aaf6d7eb539 (diff) | |
linux-gen: ishm: allocate small shm blocks using normal pages
Only memory reservations larger than ISHM_HUGE_PAGE_LIMIT (64kB) are
allocated using huge pages (if available). Smaller reservations are done
using normal pages to conserve memory.
Signed-off-by: Matias Elo <matias.elo@nokia.com>
Reviewed-by: Bill Fischofer <bill.fischofer@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Diffstat (limited to 'platform')
| -rw-r--r-- | platform/linux-generic/odp_ishm.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/platform/linux-generic/odp_ishm.c b/platform/linux-generic/odp_ishm.c index 054ef6a0f..9bf40eb35 100644 --- a/platform/linux-generic/odp_ishm.c +++ b/platform/linux-generic/odp_ishm.c @@ -126,6 +126,13 @@ #define ISHM_NB_FRAGMNTS (ISHM_MAX_NB_BLOCKS * 2 + 1) /* + * Memory reservations larger than ISHM_HUGE_PAGE_LIMIT (bytes) are allocated + * using huge pages (if available). Smaller reservations are done using normal + * pages to conserve memory. + */ +#define ISHM_HUGE_PAGE_LIMIT (64 * 1024) + +/* * when a memory block is to be exported outside its ODP instance, * an block 'attribute file' is created in /dev/shm/odp-<pid>-shm-<name>. * The information given in this file is according to the following: @@ -1092,7 +1099,7 @@ int _odp_ishm_reserve(const char *name, uint64_t size, int fd, /* Otherwise, Try first huge pages when possible and needed: */ if ((fd < 0) && page_hp_size && ((flags & _ODP_ISHM_USE_HP) || - size > page_sz)) { + size > ISHM_HUGE_PAGE_LIMIT)) { /* at least, alignment in VA should match page size, but user * can request more: If the user requirement exceeds the page * size then we have to make sure the block will be mapped at |